46-44-04: Carburetor Hot Air Ducts
FAA order 46-44-04 is an airworthiness directive. The FAA's subject line: Carburetor Hot Air Ducts. It names Cessna 120, Cessna 140: about 2,499 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: engine.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Cessna Aircraft Company
- Models
- 120, 140
- On this site
- Cessna 120 660 registered
Cessna 140 1,839 registered
Dates and paperwork
- Docket
- Unknown
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
The order itself the regulatory text, as published
Show the full text (476 characters)
46-44-04 CESSNA: (Was Mandatory Note 4 of AD-768-4.) Applies to 120 and 140 Aircraft Serial Numbers Up to and Including 9721.
Replacement required prior to December 1, 1946.
All U. S. Rubber Co. P-212 and P-212L Series flexible ducts installed in the carburetor hot air system should be replaced by U. S. Rubber Co. P-208-S duct or P-208 duct coated with neoprene by Cessna or its distributors.
(Cessna Service Letter No. 16-120 and 140 covers this same subject.)
Related safety bulletins advice on the same designs, not orders
2015-04-15CE-15-13 · FUSELAGE Seat Belt Mounting Bracket
2010-07-30CE-10-40R1 · Aircraft Fuel System; water contamination of fuel tank systems on Cessna single engine airplanes
2009-07-24CE-09-42 · Lights - Landing Light, Beacon Light and Taxi Light Switch Applications
2006-05-24CE-06-46 ·
2005-08-09CE-05-80 ·
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 28, 2026. Connections as data: /graph/directive/46-44-04.json · aircraft systems.